Mesoporous Rh nanoparticles as efficient electrocatalysts for hydrogen evolution reaction

Jiyoung Kim, Kenya Kani, Jeonghun Kim, Jeong Seok Yeon, Min Kyu Song, Bo Jiang, Jongbeom Na, Yusuke Yamauchi, Ho Seok Park

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

In the face of hydrogen society, considerable efforts to develop highly active and stable electrocatalysts for hydrogen evolution reaction (HER) have been undertaken to realize sustainable hydrogen production using water splitting. A rational design of mesoporous structure is considered as a promising approach for efficient electrochemical reaction. Herein, we demonstrate the mesoporous rhodium nanoparticles (MRNs) synthesized by simple chemical reduction using polymeric micelle template for the high electrocatalytic performance of HER in an acidic media. Due to the large accessible surface area and abundant low-coordinated atoms on the concave pore surface, our MRNs exhibits the lower overpotential of 29.4 mV at a current density of 10 mA/cm2 for HER, compared to 33.8 mV of Rh black. The MRNs also achieves a small Tafel slope of 30.9 mV/dec, enhanced exchange current density and excellent stability in long-term operation. These kinetic and stability properties are attributed to the uniform mesoporous morphology and the robust structure of the MRNs.

Original languageEnglish
Pages (from-to)371-375
Number of pages5
JournalJournal of Industrial and Engineering Chemistry
Volume96
DOIs
Publication statusPublished - 2021 Apr 25

Bibliographical note

Publisher Copyright:
© 2021 The Korean Society of Industrial and Engineering Chemistry

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering

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